Archaeotriakis rochelleae

CASE, 1978


Classification: Elasmobranchii Carcharhiniformes Triakidae

Reference of the original description
CASE, G.R. (1978)
A new selachian fauna from the Judith River Formation (Campanian) of Montana. Palaeontographica, Abt. A, 160 (1–6): 176–205, 16 fig., 6 pl., 3 tabl.

Types
Archaeotriakis rochelleae
Holotype: MTA: 20; Paratype: MTA: 21;


Description:


Citation: Archaeotriakis rochelleae CASE, 1978: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 04/2019

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Archaeotriakis rochelleae CASE, 1978; Holotype, (MTA 20), x 36 (SEM), upper lateral tooth © G. Case

Distribution Geographic
Blaine County, Montana [388], north-central Wyoming [393]

Distribution Strategraphy
Judith River Formation (Campanian) [388], Late Campanian, Mesaverde Formation [393]

Description
Diagnosis after Case 1978 [388]: Pseudotriakiid teeth, minute in size, less than 1/2 of a millimeter in height, robust in structure, short platform (root base), not inclined upward as in typical scyliorhinids, with two truncated and bifurcated lateral denticles, highly ornamented on the labial aspect, with grotesque ridges and ridgelets on either ride of the central cusp.

References
CASE, G.R. (1987)
A new selachian fauna from the Late Campanian of Wyoming (Teapot Sandstone Member, Mesaverde Formation, Big Horn Basin). Palaeontographica, Abt. A, 197 (1–3): 1–37, 12 fig., 15 pl., 3 tabl.
CASE, G.R. (1978)
A new selachian fauna from the Judith River Formation (Campanian) of Montana. Palaeontographica, Abt. A, 160 (1–6): 176–205, 16 fig., 6 pl., 3 tabl.